ActiveScriptWrappable: GC wrappers in detached ExecutionContexts.

third_party/WebKit/Source/modules/mediastream/MediaDevices.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/mediastream/MediaDevices.h"
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMException.h"
@@ skipping 52 matching lines @@
 
 }  // namespace
 
 MediaDevices* MediaDevices::create(ExecutionContext* context) {
   MediaDevices* mediaDevices = new MediaDevices(context);
   mediaDevices->suspendIfNeeded();
   return mediaDevices;
 }
 
 MediaDevices::MediaDevices(ExecutionContext* context)
-    : ActiveScriptWrappable(this),
+    : ActiveScriptWrappable<MediaDevices>(this),
       SuspendableObject(context),
       m_observing(false),
       m_stopped(false),
       m_dispatchScheduledEventRunner(AsyncMethodRunner<MediaDevices>::create(
           this,
-          &MediaDevices::dispatchScheduledEvent)) {
-}
+          &MediaDevices::dispatchScheduledEvent)) {}
 
 MediaDevices::~MediaDevices() {}
 
 ScriptPromise MediaDevices::enumerateDevices(ScriptState* scriptState) {
   Document* document = toDocument(scriptState->getExecutionContext());
   UserMediaController* userMedia = UserMediaController::from(document->frame());
   if (!userMedia)
     return ScriptPromise::rejectWithDOMException(
         scriptState,
         DOMException::create(NotSupportedError,
@@ skipping 157 matching lines @@
 }
 
 DEFINE_TRACE(MediaDevices) {
   visitor->trace(m_dispatchScheduledEventRunner);
   visitor->trace(m_scheduledEvents);
   EventTargetWithInlineData::trace(visitor);
   SuspendableObject::trace(visitor);
 }
 
 }  // namespace blink